Re: [PATCH 0/7] KVM: x86: APX reg prep work

[Paolo Bonzini]

On 3/11/26 01:33, Sean Christopherson wrote:
> Clean up KVM's register tracking and storage in preparation for landing APX,
> which expands the maximum number of GPRs from 16 to 32.
>
> This is kinda sorta an RFC, as there are some very opinionated changes.  I.e.
> if you dislike something, please speak up.
>
> My thought is to treat R16-R31 as much like other GPRs as possible (though
> maybe we don't need to expand regs[] as sketched out in the last patch?).

The cleanups in patches 1-4 are nice.

For APX specifically, in abstract it's nice to treat R16-R31 as much as 
possible as regular GPRs.  On the other hand, the extra 16 regs[] 
entries would be more or less unused, the ugly switch statements 
wouldn't go away.  In other words, most of your remarks to Changseok's 
patches would remain...

Paolo